Anything that we have to learn to do we learn by the actual doing of it; People become builders by building and instrumentalists by playing instruments. Similarily, we become just by performing just acts, temperate by performing temperate ones, brave by performing brave ones.
We must begin to inculcate our children against militarism by educating them in the spirit of pacifism. Our schoolbooks glorify war and conceal it's horror. I would teach peace rather than war.
It is evident, then, that there is a sort of education in which parents should train their sons, not as being useful or necessary, but because it is liberal or noble.
The sole function of education...[is] to open the way to thinking and knowing, and the school, as the outstanding organ for the people's education, must serve that end exclusively.
The spirit only can teach. Not any profane man, not any sensual, not any liar, not any slave can teach, but only he can give, whohas; he only can create, who is. The man on whom the soul descends, through whom the soul speaks, alone can teach. Courage, piety, love, wisdom, can teach; and every man can open his door to these angels, and they shall bring him the gift of tongues. But the man who aims to speak as books enable, as synods use, as the fashion guides, and as interest commands, babbles. Let him hush.
I have always had this view about the modern education system: we pay attention to brain development, but the development of warmheartedness we take for granted.